/* Google风格进度条 */
.google-progress-container {
  width: 100%;
  height: 4px;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  display: none;
  overflow: hidden;
  background-color: transparent;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.google-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 25%;
  background-color: #4285F4; /* Google 蓝色 */
  transform: translateX(-100%);
  animation: google-progress-animation 2s infinite cubic-bezier(0.65, 0.05, 0.36, 1);
}

@keyframes google-progress-animation {
  0% {
    transform: translateX(-100%);
  }
  25% {
    transform: translateX(0%);
  }
  50% {
    transform: translateX(100%);
  }
  75% {
    transform: translateX(300%);
  }
  100% {
    transform: translateX(400%);
  }
}